improve sparkmaker script

tools/convert_sparkmaker.py

 #!/usr/bin/env python
 
+# convert_sparkmaker.py
+# Copyright 2023 Thomas Buck <thomas@xythobuz.de>
+# Convert PrusaSlicer .sl1 files to Sparkmaker .wow format
+# Lift settings can only be customized below, not in the slicer.
+# Should also work for Sparkmaker FHD, adjust parameters below.
+
 import sys
 import os
 from zipfile import ZipFile
     'lift_speed': 30.0,
     'sink_speed': 100.0
 }
+final_move_speed = 100.0
 
 ###############################################################################
 
         write("G4 S" + str(exposure_time) + ";")
         write("G4 S1;")
 
+    write("M106 S0;")
+
     object_height = params['layer_height'] * (len(imgs) - 1) + params['first_layer_height']
     final_move = max_height - object_height
+    if final_move >= 1.0:
+        write("G1 Z1 F" + str(params['lift_speed']) + ";")
+        write("G1 Z" + str(final_move - 1.0) + " F" + str(final_move_speed) + ";")
 
-    write("M106 S0;")
-    write("G1 Z" + str(final_move) + " F25;")
     write("M18;")
 
 ###############################################################################
 
     print("Using following parameters:")
     pprint.pprint(params)
+
+    print("Height: {:.3f}".format(params['first_layer_height'] + (params['layer_height'] * (len(imgs) - 1))) + "mm")
+
+    t = params['first_exposure_time']
+    t += (len(imgs) - 1) * params['exposure_time']
+    t += params['lift_height'] / params['lift_speed'] * 60 * len(imgs)
+    t += (params['lift_height'] - params['layer_height']) / params['sink_speed'] * 60 * len(imgs)
+    h = t / 3600
+    m = (t / 60) % 60
+    s = t % 60
+    print("Estimated print time: " + str(int(h)) + "h " + str(int(m)) + "m " + str(int(s)) + "s")
+
     print("Writing output to \"" + out_file_name + "\"")
 
     with open(out_file_name, 'wb') as wow: